DE2806009C2 - Radiation cylinder of an electrical machine with superconducting excitation winding, method for its manufacture and device for carrying out the method - Google Patents
Radiation cylinder of an electrical machine with superconducting excitation winding, method for its manufacture and device for carrying out the methodInfo
- Publication number
- DE2806009C2 DE2806009C2 DE2806009A DE2806009A DE2806009C2 DE 2806009 C2 DE2806009 C2 DE 2806009C2 DE 2806009 A DE2806009 A DE 2806009A DE 2806009 A DE2806009 A DE 2806009A DE 2806009 C2 DE2806009 C2 DE 2806009C2
- Authority
- DE
- Germany
- Prior art keywords
- cylinder
- radiation
- channels
- inner cylinder
- radiation cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005855 radiation Effects 0.000 title claims description 27
- 238000004804 winding Methods 0.000 title claims description 10
- 230000005284 excitation Effects 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000001816 cooling Methods 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 244000309464 bull Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
- H02K55/02—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type
- H02K55/04—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type with rotating field windings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/825—Apparatus per se, device per se, or process of making or operating same
- Y10S505/917—Mechanically manufacturing superconductor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/825—Apparatus per se, device per se, or process of making or operating same
- Y10S505/917—Mechanically manufacturing superconductor
- Y10S505/928—Metal deforming
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49361—Tube inside tube
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49863—Assembling or joining with prestressing of part
- Y10T29/49865—Assembling or joining with prestressing of part by temperature differential [e.g., shrink fit]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49879—Spaced wall tube or receptacle
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superconductive Dynamoelectric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
- Particle Accelerators (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
Die Erfindung bezieht sich auf einen dünnwandigen Strahlungszylinder gemäß dem Oberbegriff des Patentanspruchs 1, ein Verfahren zu dessen Herstellung sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a thin-walled radiation cylinder according to the preamble of patent claim 1, a method for its production and a device for carrying out the method.
Mit diesem Oberbegriff nimmt die Erfindung Bezug auf einen Stand der Technik, wie er sich beispielsweise aus der DE-OS 20 28 158 ergibt.With this generic term, the invention refers to a state of the art, as it arises, for example, from DE-OS 20 28 158.
Im Art. "Turbogeneratoren mit supraleitender Erregerwicklung" in Bull. SEV 64 (1973) 17, 18. August, Seite 1040-1050, ist auf Seite 1043 in Fig. 3 ein Längsschnitt eines Turbogenerators mit supraleitender Erregerwicklung dargestellt. Die Erregerwicklung wird durch das flüssige Helium gekühlt. Der die Wicklung tragende kalte Rotorkörper ist innerhalb eines äußeren, warmen Zylinders angeordnet und im Zwischenraum wird ein hohes Vakuum erzeugt. Die Befestigung des inneren Rotorkörpers und die Übertragung des Drehmomentes an die Wellenenden, die sich an Raumtemperatur befinden, erfolgt über dünne Übergangsstücke, die zusätzlich mit Helium abgekühlt werden. Im Vakuumzwischenraum befindet sich noch ein dünner Zylinder, sogenannter Strahlungszylinder, der als zusätzlicher elektrothermischer Schild die vom Außenzylinder ausgestrahlte Wärme aufnimmt und den Rest der magnetischen Felder, die durch den äußeren Dämpferzylinder hindurchdringen, auf ein für den Supraleiter erträglichen Betrag abdämpft. Die Herstellung eines solchen Strahlungszylinders ist ziemlich kompliziert weil es sich um große Abmessungen des Strahlungszylinders handelt, dessen Länge z. B. 10 m beträgt.In the article "Turbogenerators with superconducting excitation winding" in Bull. SEV 64 (1973) 17, 18 August, pages 1040-1050 , on page 1043 in Fig. 3 a longitudinal section of a turbogenerator with superconducting excitation winding is shown. The excitation winding is cooled by liquid helium. The cold rotor body carrying the winding is arranged inside an outer, warm cylinder and a high vacuum is created in the space between them. The inner rotor body is attached and the torque is transmitted to the shaft ends, which are at room temperature, via thin transition pieces that are additionally cooled with helium. In the vacuum space there is also a thin cylinder, the so-called radiation cylinder, which acts as an additional electrothermal shield to absorb the heat emitted by the outer cylinder and dampens the rest of the magnetic fields that penetrate through the outer damper cylinder to an amount that the superconductor can tolerate. The manufacture of such a radiation cylinder is quite complicated because the dimensions of the radiation cylinder are large, the length of which is, for example, 10 m.
Aus der eingangs genannten DE-OS 20 28 158 ist eine rotierende elektrische Maschine mit supraleitender Erregerwicklung bekannt, deren Läufer einen Tragzylinder aufweist, der von einer vom Tragzylinder beabstandeten Strahlungsabschirmung, dem Strahlungszylinder umgeben ist. Ein Teil des Kühlmittels, das zur Kühlung der Erregerwicklung dient, wird durch Rohre, die am Strahlungszylinder befestigt sind, geleitet und dient zu dessen Kühlung. Die konstruktive Ausführung dieser Kühlung des Strahlungszylinders ist jedoch in der DE--OS 20 28 158 weder beschrieben noch in deren Zeichnung dargestellt.From the aforementioned DE-OS 20 28 158, a rotating electrical machine with a superconducting excitation winding is known, the rotor of which has a support cylinder which is surrounded by a radiation shield, the radiation cylinder, which is spaced apart from the support cylinder. Part of the coolant which serves to cool the excitation winding is led through pipes which are attached to the radiation cylinder and serves to cool it. However, the structural design of this cooling of the radiation cylinder is neither described in DE-OS 20 28 158 nor shown in its drawing.
Aus der zum Stand der Technik zählenden, nicht vorveröffentlichten DE-OS 27 53 460 geht ferner ein Strahlungszylinder einer elektrischen Maschine mit supraleitender Erregerwicklung hervor, der aus einem dunnwandigen Innenzylinder und einem dünnwandigen Außenzylinder zusammengesetzt ist und wobei dazwischen Kühlkanäle ausgeführt sind.Furthermore, the prior art, unpublished DE-OS 27 53 460 discloses a radiation cylinder of an electrical machine with a superconducting excitation winding, which is composed of a thin-walled inner cylinder and a thin-walled outer cylinder, with cooling channels arranged between them.
Diese Kühlkanäle sind in der äußeren Oberfläche des Innenzylinders ausgeführt und verlaufen spiralförmig in Umfangsrichtung.These cooling channels are designed in the outer surface of the inner cylinder and run spirally in the circumferential direction.
Der im Anspruch 1 angegebenen Erfindung liegt die Aufgabe zugrunde, einen Strahlungszylinder einer elektrischen Maschine mit supraleitender Erregerwicklung zu schaffen, der sehr genau rund ist, weil sonst während des Betriebes Störungen entstehen können, und eine einfache Konstruktion der Kühlkanäle ermöglicht.The invention specified in claim 1 is based on the object of creating a radiation cylinder of an electrical machine with a superconducting excitation winding, which is very precisely round, because otherwise disturbances can occur during operation, and enables a simple construction of the cooling channels.
Diese Aufgabe wird durch die im Anspruch 1 gekennzeichneten Merkmale gelöst.This object is achieved by the features characterized in claim 1.
Der Vorteil der Erfindung liegt insbesondere darin, daß der Strahlungszylinder während der Herstellung genau bearbeitet werden kann, womit seine richtigen Abmessungen gesichert werden.The advantage of the invention lies in particular in the fact that the radiation cylinder can be precisely machined during manufacture, thus ensuring its correct dimensions.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben. Die Ausführungsform gemäß Anspruch 2 ermöglicht eine einfache und wirtschaftliche Herstellung der axial verlaufenden Kühlkanäle. Nach dem Anspruch 3 werden ringförmige Kanäle ausgeführt, die als Sammelkanäle dienen. Nach Anspruch 4 sind die ringförmigen Kanäle teilweise in der äußeren Oberfläche des Innenzylinders und im entsprechenden Teil der inneren Oberfläche des Außenzylinders ausgeführt, so daß man ausreichend große Querschnitte dieser Kanäle erreichen kann. Die nach Anspruch 5 ausgeführten Wülste können ringförmige Kanäle bilden, womit sie gleichzeitig als eine mechanische Verfestigung des Strahlungszylinders dienen. Diese können auch die ringförmigen Sammelkanäle ersetzen. Den Strahlungszylinder stellt man vorteilhaft nach Anspruch 7 so her, daß er im erwärmten Zustand auf einen Dorn aufgesteckt wird. Die danach folgende mechanische Bearbeitung sichert die richtigen Abmessungen des Innenzylinders. Gemäß Anspruch 8 wird der Außenzylinder erwärmt und danach auf den Innenzylinder aufgeschoben. Die folgende Bearbeitung gibt dann dem Strahlungszylinder die Endform.Advantageous further developments of the invention are described in the subclaims. The embodiment according to claim 2 enables simple and economical production of the axially running cooling channels. According to claim 3, ring-shaped channels are designed which serve as collecting channels. According to claim 4, the ring-shaped channels are partially designed in the outer surface of the inner cylinder and in the corresponding part of the inner surface of the outer cylinder, so that sufficiently large cross-sections of these channels can be achieved. The beads designed according to claim 5 can form ring-shaped channels, which simultaneously serve as a mechanical reinforcement of the radiation cylinder. These can also replace the ring-shaped collecting channels. The radiation cylinder is advantageously manufactured according to claim 7 in such a way that it is placed on a mandrel in a heated state. The subsequent mechanical processing ensures the correct dimensions of the inner cylinder. According to claim 8, the outer cylinder is heated and then pushed onto the inner cylinder. The subsequent processing then gives the radiation cylinder its final shape.
Die Erfindung wird im folgenden anhand einer schematischen Zeichnung näher erläutert.The invention is explained in more detail below with reference to a schematic drawing.
Die Zeichnung zeigt einen Längsschnitt durch einen zusammengesetzten und auf einen Dorn aufgeschobenen Strahlungszylinder.The drawing shows a longitudinal section through a radiation cylinder assembled and pushed onto a mandrel.
Ein Innenzylinder 1 ist mit einem Außenzylinder 2 verbunden. In den Verbindungsflächen dieser zwei Zylinder 1 und 2 verlaufen axiale Kühlkanäle 3 und in Umfangsrichtung verlaufende, ringförmige Sammelkanäle 4. In der Mitte der Zeichnung ist ein Wulst 5 sichtbar, der einen ringförmigen Kanal 6 bildet. Ein Dorn 7 besteht aus mehreren Teilen und ist mit Verfestigungsscheiben 8 versteift, die mit dem Dorn mittels Schweißnähten 9 verbunden sind. Eine Trennlinie zwischen zwei Teilen des Dornes 7 ist mit der Zahl 10 benannt.An inner cylinder 1 is connected to an outer cylinder 2. In the connecting surfaces of these two cylinders 1 and 2 there are axial cooling channels 3 and circumferentially extending, annular collecting channels 4 . In the middle of the drawing a bead 5 is visible which forms an annular channel 6. A mandrel 7 consists of several parts and is stiffened with hardening disks 8 which are connected to the mandrel by means of weld seams 9. A dividing line between two parts of the mandrel 7 is designated with the number 10 .
Der Strahlungszylinder wird wie folgt hergestellt: Ein erwärmter, aus Blechen bestehender Innenzylinder 1 wird auf den Dorn 7 aufgesteckt. Der Dorn 7 besteht aus mehreren Teilen, so daß man das Verfahren auch für große Längen der Strahlungszylinder verwenden kann. Die äußere Oberfläche des Innenzylinders 1 wird nach dem Aufschrumpfen mechanisch bearbeitet, womit man richtige äußere Abmessungen erreicht. Danach werden die axial verlaufenden Kanäle 3 in der äußeren Oberfläche des Innenzylinders 1 ausgeführt. In der inneren Fläche des Außenzylinders 2 werden die ringförmigen Kanäle 4 ausgeführt. Diese Herstellung ist verhältnismäßig einfach, weil sich die ringförmigen Kanäle 4 nur in der Nähe der Enden des Strahlungszylinders befinden. Danach kann ein oder mehrere Wülste 5 hergestellt werden, die die ringförmigen Kanäle 6 bilden. Diese Kanäle 6 dienen auch als thermische Ausgleichskanäle der axialen Kanäle 3. Der Außenzylinder 2 wird ebenfalls erwärmt, wobei er einen größeren Durchmesser erreicht. Danach wird er auf den Innenzylinder 1 aufgeschoben. Die axialen Kanäle 3 bilden mit den ringförmigen Kanälen 4 und in den Wülsten 5 sich befindlichen Kanälen 6 ein Netz für das Kühlmedium. Während des Erkaltens des Strahlungszylinders 1, 2 wird derselbe weit über die Streckgrenze gedehnt und der Form des Dornes 7 angepaßt. Somit erreicht er eine ausreichend genaue runde Form. Mit dem Bearbeiten der auf den Dorn 7 aufgeschrumpften Zylinder 1 und 2 wird die Dickentoleranz der Bleche, aus welchen die Zylinder 1 und 2 bestehen, eliminiert.The radiation cylinder is manufactured as follows: A heated inner cylinder 1 made of sheet metal is placed on the mandrel 7. The mandrel 7 consists of several parts, so that the process can also be used for long lengths of radiation cylinders. The outer surface of the inner cylinder 1 is mechanically machined after shrinking, which achieves the correct outer dimensions. The axially running channels 3 are then made in the outer surface of the inner cylinder 1. The annular channels 4 are made in the inner surface of the outer cylinder 2. This manufacture is relatively simple because the annular channels 4 are only located near the ends of the radiation cylinder. One or more beads 5 can then be made, which form the annular channels 6. These channels 6 also serve as thermal compensation channels for the axial channels 3. The outer cylinder 2 is also heated, whereby it reaches a larger diameter. It is then pushed onto the inner cylinder 1 . The axial channels 3 form a network for the cooling medium with the ring-shaped channels 4 and the channels 6 in the beads 5. As the radiation cylinder 1 , 2 cools, it is stretched far beyond the yield point and adapted to the shape of the mandrel 7. It thus achieves a sufficiently precise round shape. By machining the cylinders 1 and 2 shrunk onto the mandrel 7 , the thickness tolerance of the sheets from which the cylinders 1 and 2 are made is eliminated.
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH78878A CH623174A5 (en) | 1978-01-25 | 1978-01-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2806009A1 DE2806009A1 (en) | 1979-08-23 |
DE2806009C2 true DE2806009C2 (en) | 1987-01-29 |
Family
ID=4195196
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2806009A Expired DE2806009C2 (en) | 1978-01-25 | 1978-02-14 | Radiation cylinder of an electrical machine with superconducting excitation winding, method for its manufacture and device for carrying out the method |
DE19787804182U Expired DE7804182U1 (en) | 1978-01-25 | 1978-02-14 | RADIATION CYLINDER OF AN ELECTRICAL MACHINE WITH SUPRAL-CONDUCTING EXCITATION |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19787804182U Expired DE7804182U1 (en) | 1978-01-25 | 1978-02-14 | RADIATION CYLINDER OF AN ELECTRICAL MACHINE WITH SUPRAL-CONDUCTING EXCITATION |
Country Status (6)
Country | Link |
---|---|
US (1) | US4333223A (en) |
CA (1) | CA1124296A (en) |
CH (1) | CH623174A5 (en) |
DE (2) | DE2806009C2 (en) |
FR (1) | FR2415902A1 (en) |
SE (1) | SE7900569L (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4275320A (en) * | 1978-05-11 | 1981-06-23 | Electric Power Research Institute, Inc. | Radiation shield for use in a superconducting generator or the like and method |
US5265318A (en) * | 1991-06-02 | 1993-11-30 | Shero William K | Method for forming an in-line water heater having a spirally configured heat exchanger |
US6117329A (en) | 1999-03-25 | 2000-09-12 | Dyax Corporation | Chromatography cartridge end cap fixation |
US6783673B2 (en) * | 2002-08-23 | 2004-08-31 | Biotage, Inc. | Composite chromatography column |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2302229A (en) * | 1939-04-13 | 1942-11-17 | Aviat Corp | Manufacture of propeller blades |
US2386747A (en) * | 1944-01-27 | 1945-10-16 | Griscom Russell Co | Bimetal tube |
US2686091A (en) * | 1952-02-28 | 1954-08-10 | Mission Mfg Co | Pump liner |
US2752668A (en) * | 1953-02-25 | 1956-07-03 | Alco Products Inc | Method of salvaging pistons |
DE1068803B (en) * | 1958-01-28 | 1959-11-12 | ||
US3040846A (en) * | 1960-09-12 | 1962-06-26 | Abberly Nicholas Rippen | Built-up hollow field-weldable structural steel length |
GB1315302A (en) * | 1969-06-10 | 1973-05-02 | Int Research & Dev Co Ltd | Rotary electrical machines |
US3567975A (en) * | 1969-12-12 | 1971-03-02 | Marvin L Biesack | Electric high-speed spindle with cooling means |
US3681628A (en) * | 1970-09-14 | 1972-08-01 | Christoslaw Krastchew | Cooling arrangement for a dynamoelectric machine |
DE2339772C3 (en) * | 1973-08-06 | 1979-10-04 | Kraftwerk Union Ag, 4330 Muelheim | Arrangement for fastening a superconducting excitation winding in the rotor of a turbo generator |
US3892114A (en) * | 1974-07-10 | 1975-07-01 | Ube Industries | Containers for use in extrusion press and method of manufacturing the same |
US4085343A (en) * | 1975-06-13 | 1978-04-18 | Hitachi, Ltd. | Rotor for a rotary electrical machine having a superconductive field winding |
FR2359538A1 (en) * | 1976-07-23 | 1978-02-17 | Alsthom Cgee | Electrical machine superconducting rotor - has helically wound outer cooling channels within protective metal rotor sheath |
FR2369721A1 (en) * | 1976-10-28 | 1978-05-26 | Alsthom Atlantique | Superconducting electrical machine rotor - has auxiliary cooling circuit for cooling transition elements and thermal screen of rotor |
SU629601A1 (en) * | 1976-11-30 | 1978-10-25 | Специальное Конструкторское Бюро "Энергохиммаш" | Electric machine with cryogenic cooling |
US4275320A (en) * | 1978-05-11 | 1981-06-23 | Electric Power Research Institute, Inc. | Radiation shield for use in a superconducting generator or the like and method |
-
1978
- 1978-01-25 CH CH78878A patent/CH623174A5/de not_active IP Right Cessation
- 1978-02-14 DE DE2806009A patent/DE2806009C2/en not_active Expired
- 1978-02-14 DE DE19787804182U patent/DE7804182U1/en not_active Expired
-
1979
- 1979-01-22 SE SE7900569A patent/SE7900569L/en not_active Application Discontinuation
- 1979-01-22 FR FR7901486A patent/FR2415902A1/en active Granted
- 1979-01-25 CA CA320,272A patent/CA1124296A/en not_active Expired
-
1980
- 1980-04-01 US US06/136,349 patent/US4333223A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2415902A1 (en) | 1979-08-24 |
DE7804182U1 (en) | 1980-01-10 |
US4333223A (en) | 1982-06-08 |
SE7900569L (en) | 1979-07-26 |
CA1124296A (en) | 1982-05-25 |
DE2806009A1 (en) | 1979-08-23 |
CH623174A5 (en) | 1981-05-15 |
FR2415902B1 (en) | 1983-03-18 |
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